 /*******************************************************************************
  * Copyright (c) 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal.ide.actions;

 import org.eclipse.osgi.util.NLS;

 import org.eclipse.swt.SWT;
 import org.eclipse.swt.widgets.FileDialog;

 import org.eclipse.core.filesystem.EFS;
 import org.eclipse.core.filesystem.IFileStore;

 import org.eclipse.core.runtime.Path;

 import org.eclipse.jface.action.Action;
 import org.eclipse.jface.action.IAction;
 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jface.viewers.ISelection;

 import org.eclipse.ui.IWorkbenchPage;
 import org.eclipse.ui.IWorkbenchWindow;
 import org.eclipse.ui.IWorkbenchWindowActionDelegate;
 import org.eclipse.ui.PartInitException;
 import org.eclipse.ui.ide.IDE;
 import org.eclipse.ui.internal.ide.IDEWorkbenchMessages;
 import org.eclipse.ui.internal.ide.IDEWorkbenchPlugin;


 /**
  * Standard action for opening an editor on local file(s).
  * <p>
  * This class may be instantiated; it is not intended to be subclassed.
  * </p>
  */
 public class OpenLocalFileAction extends Action implements IWorkbenchWindowActionDelegate {

     private IWorkbenchWindow window;
     private String filterPath;

     /**
      * Creates a new action for opening a local file.
      */
     public OpenLocalFileAction() {
         setEnabled(true);
     }

     /* (non-Javadoc)
      * @see org.eclipse.ui.IWorkbenchWindowActionDelegate#dispose()
      */
     public void dispose() {
         window = null;
         filterPath = null;
     }

     /* (non-Javadoc)
      * @see org.eclipse.ui.IWorkbenchWindowActionDelegate#init(org.eclipse.ui.IWorkbenchWindow)
      */
     public void init(IWorkbenchWindow window) {
         this.window = window;
         filterPath = System.getProperty("user.home"); //$NON-NLS-1$
 }

     /* (non-Javadoc)
      * @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
      */
     public void run(IAction action) {
         run();
     }

     /* (non-Javadoc)
      * @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction, org.eclipse.jface.viewers.ISelection)
      */
     public void selectionChanged(IAction action, ISelection selection) {
     }

     /* (non-Javadoc)
      * @see org.eclipse.jface.action.Action#run()
      */
     public void run() {
         FileDialog dialog = new FileDialog(window.getShell(), SWT.OPEN | SWT.MULTI);
         dialog.setText(IDEWorkbenchMessages.OpenLocalFileAction_title);
         dialog.setFilterPath(filterPath);
         dialog.open();
         String [] names = dialog.getFileNames();

         if (names != null) {
             filterPath = dialog.getFilterPath();

             int numberOfFilesNotFound = 0;
             StringBuffer notFound = new StringBuffer ();
             for (int i = 0; i < names.length; i++) {
                 IFileStore fileStore = EFS.getLocalFileSystem().getStore(new Path(filterPath));
                 fileStore = fileStore.getChild(names[i]);
                 if (!fileStore.fetchInfo().isDirectory() && fileStore.fetchInfo().exists()) {
                     IWorkbenchPage page = window.getActivePage();
                     try {
                         IDE.openEditorOnFileStore(page, fileStore);
                     } catch (PartInitException e) {
                         String msg = NLS.bind(IDEWorkbenchMessages.OpenLocalFileAction_message_errorOnOpen, fileStore.getName());
                         IDEWorkbenchPlugin.log(msg,e.getStatus());
                         MessageDialog.openError(window.getShell(), IDEWorkbenchMessages.OpenLocalFileAction_title, msg);
                     }
                 } else {
                     if (++numberOfFilesNotFound > 1)
                         notFound.append('\n');
                     notFound.append(fileStore.getName());
                 }
             }

             if (numberOfFilesNotFound > 0) {
                 String msgFmt = numberOfFilesNotFound == 1 ? IDEWorkbenchMessages.OpenLocalFileAction_message_fileNotFound : IDEWorkbenchMessages.OpenLocalFileAction_message_filesNotFound;
                 String msg = NLS.bind(msgFmt, notFound.toString());
                 MessageDialog.openError(window.getShell(), IDEWorkbenchMessages.OpenLocalFileAction_title, msg);
             }
         }
     }
 }

